CN216353186U - Fire-fighting emergency sign lamp - Google Patents

Abstract

The utility model provides a fire-fighting emergency sign lamp, which belongs to the field of emergency equipment and comprises: the first connecting part is arranged on the inner surface of the face cover component; the back plate is buckled with the face cover component along the periphery, the light guide plate is clamped between the face cover component and the back plate, and a second connecting part is formed on the light guide plate and is fixedly connected with the first connecting part. By the scheme of the utility model, the assembly property of the sign lamp is improved.

Description

Fire-fighting emergency sign lamp

Technical Field

The utility model relates to the field of emergency equipment, in particular to a fire-fighting emergency sign lamp.

Background

According to the fire safety requirement, a fire emergency sign lamp is required to be installed in a public building or near the building for fire emergency evacuation indication. The face lid marker light comprises a shell body generally consisting of a face lid and a back plate, a circuit board and a light guide plate are arranged in the shell body, the light guide plate in the existing fire-fighting emergency marker light is fixed on the face lid in a glue pasting mode, the gluing/gluing process is complicated, and after glue is required to be solidified, subsequent assembly can be carried out, so that not only is a large assembly space required, but also the assembly time is long, so that the assembly performance of the product is poor, and the cost of the product is also improved. In the process that the lamp product is used, the light guide plate can fall off due to aging of glue after long-time use, and therefore the lamp is damaged.

SUMMERY OF THE UTILITY MODEL

Based at least in part on the above-mentioned disadvantages, it is an object of the present invention to improve the assemblability of a light guide plate in an emergency sign light fixture.

The second purpose of the utility model is to improve the structural strength/structural stability of the emergency sign lamp.

It is a further object of the present invention to improve the optical connectivity between surfaces in an emergency sign light fixture.

To solve at least one of the above technical problems, an embodiment of the present invention provides a fire emergency sign lamp, including:

the surface cover component is arranged on the upper surface of the shell,

the first connecting part is arranged on the inner surface of the face cover component;

a back plate which is buckled with the surface cover component along the periphery,

and the light guide plate is clamped between the surface cover component and the back plate, and a second connecting part is formed on the light guide plate and is fixedly connected with the first connecting part.

Alternatively, in some embodiments, the first connection portion and the second connection portion may be implemented in a male-female fit structure or a snap fit structure.

Optionally, in some embodiments, a) the surface cover assembly further includes a surface cover having a mark hole, or, in other embodiments, B) the surface cover assembly further includes a surface cover having a mark hole and a light-transmitting member having a shape of a mark pattern corresponding to the mark hole, and the light-transmitting member is filled in and fixed in the mark hole. In these embodiments, the first connecting portion may be a protruding portion on the surface cover or the light-transmitting member, and the second connecting portion may be a recessed portion on the light guide plate, and is matched with the protruding portion. As an alternative, the first connection portion may also be a recessed portion (for example, a blind hole, a surface recess, or the like) on the surface cover or the light-transmitting member, and the second connection portion may also be a protruding portion on the light-guiding plate, which are connected in a matching manner.

Optionally, in some embodiments, the first connecting portion protrudes from an inner surface of the face cover or an inner surface of the light-transmitting member. And along with the connection and fixation of the first connecting part and the second connecting part, a) the first surface of the light guide plate and b) the inner surface of the surface cover and/or the inner surface of the light-transmitting piece are fixed oppositely.

The light-transmitting member may be filled in the index hole, or may not be filled in the index hole to allow the light guide plate to be directly exposed to the outside through the index hole. Alternatively, in some embodiments where the light transmissive member is not filled in the indicia holes, the indicia pattern is formed on the first surface of the light guide plate in a protruding manner; the first surface is close to the inner surface of the face cover along with the mutual connection of the first connecting part and the second connecting part so that the mark patterns on the first surface enter the mark holes, or the first surface is close to the inner surface of the face cover along with the mutual connection of the first connecting part and the second connecting part so that the mark patterns on the first surface enter the mark holes.

In some embodiments of the present application, the light guide plate has two surfaces (or simply referred to as two surfaces) facing away from each other, at least one of the two surfaces integrally protrudes to form a mark pattern, and in the fire emergency sign lamp, the protruding portion of the mark pattern protrudes into the mark hole of the surface cover, so as to form the light guide plate and the fire emergency sign lamp capable of displaying on a single surface or on two surfaces. The logo pattern is a part integrally connected to the light guide plate, and forms a protrusion on one or both (side) surfaces of the light guide plate, and the protrusion protrudes from the light guide plate main body in an integrally extending structure. The protrusion direction of the protrusion is different from the main extending direction of the light guide plate body, for example, has an included angle of about 90 °, so that the light guide plate body and the protrusion together define (define) a bent light guiding path, and since the mark pattern as the protrusion is integrally formed by extending the light guide plate body, the bent light guiding path is continuous and uninterrupted. The light transmission performance is improved, for example, through the light guide path, the light in the main body part of the light guide plate can be smoothly transmitted to the mark pattern with low loss to be displayed. Moreover, the integral extending structure of the logo patterns on the light guide plate body also simplifies the structure of the light guide plate in the logo lamp, so that the light guide plate with the simple structure is convenient to be integrally processed and manufactured by injection molding of light-transmitting plastics such as polycarbonate and the like, and the assembly property of the logo lamp and the manufacturability of the light guide plate in the logo lamp are improved.

In other embodiments of "filling the light-transmitting member in the mark hole", because the first surface of the light guide plate is attached to the inner surface of the light-transmitting member, the first surface and the second surface also define a bent light guide path in space, so that the light emitted from the light source body deeper inside the lamp can be guided into the mark hole of the surface cover through the light guide plate and the light-transmitting member and emitted outwards, and the panel of the lamp can emit light outwards through the mark hole to present a mark pattern.

Optionally, in some embodiments, the first connecting portion is a fixing column standing on the inner surface of the face cover and/or the inner surface of the light-transmitting member; the second connecting part is a sunken part which is formed on the first surface of the light guide plate and is matched with the fixing column;

the fixing column is inserted and fixed in the through hole.

Optionally, in some embodiments, the second connecting portion is a through hole formed in the light guide plate body, and the aperture of the second connecting portion is matched with the fixing column; and the top of the fixed column can adopt the following structural design to be fixed relative to the through hole: a) the top of the fixed column extends to a hole diameter larger than the through hole; or b) the top of the fixed column has elasticity and the size of the fixed column is larger than the aperture of the through hole; or c) the top of the fixed column is formed into an elastic buckle; or d) expanding the top of the fixed column to a size larger than the aperture of the through hole. In the scheme b), the top of the fixing column is elastically contracted to allow the fixing column to pass through the through hole along with the insertion of the fixing column into the through hole; and the top of the fixing column extends out of the through hole along with the top of the fixing column, and the top of the fixing column expands due to the elasticity of the fixing column, so that the fixing column cannot exit from the through hole, and the fixing column and the through hole are connected and fixed.

Further optionally, the light guide plate further has a second surface opposite to the first surface, or the light guide plate further has a second surface opposite to the first surface, the fixing posts are inserted into the through holes to form a general fastening degree, and the back plate may be partially protruded toward the second surface to press against the second surface, so that the relative fixation between the face cover and the light guide plate is realized by means of the insertion structure between the fixing posts and the through holes and the pressing of the light guide plate against the face cover by the back plate.

Optionally, in some embodiments, the first connecting portion is one or more pairs of oppositely disposed buckles, standing on the inner surface of the face cover and/or the inner surface of the light-transmitting member; the second connecting part is the edge of the light guide plate or a notch matched with the buckle on the edge; the buckle is matched with the edge of the light guide plate or the notch on the light guide plate in a buckling mode. The notch on the edge of the light guide plate or the edge is in clamping fit with the clamping piece, so that the light guide plate and the surface cover are relatively fixed, and the first surface of the light guide plate and the inner surface of the surface cover are fixedly and relatively arranged. In this arrangement, no holes need to be formed in the light guide plate, thereby reducing the influence on the light propagation in the light guide plate to some extent. The main parts of the sign lamp, such as the surface cover, the light guide plate and the like, can be assembled by simple operations of pressing and the like no matter the buckle connection or the connection mode of the fixing column and the through hole, and the treatment of gluing and the like is not needed, so that the connectability/combinability between a plurality of surfaces (such as the light emitting surface of the light guide plate and the inner surface of the surface cover, the light emitting surface of the light guide plate and the inner surface of the light-transmitting piece) in the emergency sign lamp is improved, and the assembly property of the lamp is further improved.

Optionally, in some embodiments, the first connecting portion is one or more pairs of buckles, extends towards the light guide plate substantially perpendicular to the inner surface of the face cover and/or the inner surface of the light-transmitting member, and is buckled at the edge of the light guide plate or the notch on the edge, where the edge of the light guide plate or the notch on the edge matched with the buckle is used as the second connecting portion to be buckled with the first connecting portion. Herein, "substantially perpendicular" means that the angle between the protruding (male) snap or fixing post and the face cover/light-transmitting member/light guide plate body ranges from [80 °,90 ° ], or [75 °,90 ° ], or [85 °,90 ° ], or [70 °,90 ° ]. Of course, alternatively, the cross section of the fixing column may be circular, oval, square, or the like, and the fixing column is not limited to be a cylinder as a whole, and may also be in the shape of a cone, a circular truncated cone, a truncated pyramid, or a hollow cylindrical surface, and the through hole has a shape corresponding to the dimension of the fixing column. Moreover, the fixing column is not limited to be straight, and can also have a certain radian and curvature.

Wherein, A) a plurality of pairs of buckles set up in face lid internal surface along sign hole edge in opposite directions, or, B) a plurality of pairs of buckles set up in light-transmitting part internal surface along light-transmitting part edge in opposite directions, or, C) a plurality of pairs of buckles set up in face lid internal surface and/or light-transmitting part internal surface in opposite directions along light guide plate edge. Therefore, the joint part of the fastener and the light guide plate is uniformly and tightly surrounded/distributed on the periphery of the light guide plate, and firmer fixed connection between the light guide plate and the surface cover can be realized.

Optionally, in some embodiments, the light source module further comprises a light source body and a circuit board, wherein the light guide plate extends to the periphery of the sign hole and is optically connected with the light source body; the light source body is a plurality of LED lamp beads distributed on the circuit board, a plurality of concave light inlets are distributed on the periphery of the light guide plate and respectively contain the LED lamp beads; wherein, A) the light inlet is not communicated with the light guide plate body, or B) the light inlet is communicated with the light guide plate body.

In some embodiments, the surface cover assembly has a first connecting portion on an inner surface thereof, and the light guide plate has a second connecting portion on an optical surface thereof, and is fixedly connected to the first connecting portion, such that a) the optical surface of the light guide plate is fixedly opposed to B) the inner surface of the surface cover and/or the inner surface of the light-transmitting member, and a path for light to travel is formed between the light guide plate and the light-transmitting member. Further, the light is allowed to pass through the light guide plate and is emitted out through the mark hole to form a mark pattern.

The connecting part is arranged on the optical surface of the light guide plate and the inner surface of the light transmitting part, so that the surface connection between the two surfaces is supported, the two surfaces can be fixedly opposite to each other, but the contact between the two surfaces is not necessarily required, the two surfaces can be oppositely fixed with a certain gap on the premise of not influencing the conduction light to form the mark pattern through the mark hole, of course, in some preferred embodiments, after the two surfaces are connected and fixed, a) the light transmitting part and b) the optical surface of the light guide plate form a relatively stable and close surface contact or attachment structure by setting the length/matching parameters of the second connecting part and the first connecting part, so that better light guide efficiency is obtained, and the display effect of the mark pattern is also improved.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:

FIG. 1a shows an exploded perspective view (except for the back panel) of an emergency sign light of one embodiment of the present invention;

FIG. 1B shows a cross-sectional view along the direction B-B in FIG. 3;

FIG. 2a is an exploded perspective view of an emergency sign light of another embodiment of the present invention;

FIG. 2B shows a further cross-sectional view along the direction B-B in FIG. 3;

FIG. 3 illustrates an assembled schematic view of an emergency sign light fixture (with back plate or face cover removed) in some embodiments of the utility model;

FIG. 4 shows a schematic assembled view of an emergency sign light fixture in further embodiments of the utility model (with the back plate or face cover removed);

FIG. 5a shows an exploded perspective view of the emergency sign light of FIG. 4;

FIG. 5b shows a cross-sectional view of the emergency sign light shown in FIG. 5a in the direction A-A in FIG. 4;

FIG. 6a is an exploded perspective view of an emergency sign light of yet another embodiment of the present invention;

FIG. 6b shows a first cross-sectional view of the emergency sign light shown in FIG. 6a in the direction A-A of FIG. 4;

FIG. 6c shows a second cross-sectional view of the emergency sign light shown in FIG. 6a in the direction A-A of FIG. 4;

FIG. 6d shows a third cross-sectional view of the emergency sign light shown in FIG. 6a in the direction A-A in FIG. 4;

FIG. 6e shows a fourth cross-sectional view of the emergency sign light shown in FIG. 6a in the direction A-A in FIG. 4;

fig. 7a and 7b show a connection structure and a connection process between two connection parts shown in fig. 6 e;

FIG. 8 is a partial schematic view of a light guide plate with light inlets of different shapes distributed on a bottom portion in one embodiment;

in the description of the drawings, the same, similar or corresponding reference numerals indicate the same, similar or corresponding elements, components or functions.

Detailed Description

Reference will now be made in detail to the embodiments, examples of which are illustrated in the accompanying drawings. In the following detailed description, numerous specific details are set forth in order to provide a thorough understanding of various described embodiments. It will be apparent, however, to one skilled in the art that the various described embodiments may be practiced without these specific details. In other instances, well-known methods, procedures, components, circuits, and networks have not been described in detail as not to unnecessarily obscure aspects of the embodiments.

Reference will now be made in detail to the embodiments, examples of which are illustrated in the accompanying drawings. In the following detailed description, numerous specific details are set forth in order to provide a thorough understanding of various described embodiments. It will be apparent, however, to one skilled in the art that the various described embodiments may be practiced without these specific details. In other instances, well-known methods, procedures, components, circuits, and networks have not been described in detail as not to unnecessarily obscure aspects of the embodiments.

The terminology used in the description of the various embodiments herein is for the purpose of describing particular embodiments only and is not intended to be limiting. As used in the description of the various embodiments and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will also be understood that the term "and/or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items. It will be further understood that the terms "comprises," "comprising," "includes," and/or "including," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.

The word "by" as used in this application may be construed as "by" (by), "by" (by virtual of) or "by" (by means of) depending on the context. The words "if", as used herein, may be interpreted as "at … …" or "at … …" or "in response to a determination" or "in response to a detection", depending on the context. Similarly, "when … …" or "when … …" in some embodiments may also be interpreted as conditional assumptions such as "if", "like", etc., depending on context. Similarly, the phrases "if (a stated condition or event)", "if determined" or "if detected (a stated condition or event)" may be construed as "when determined" or "in response to a determination" or "when detected (a stated condition or event)", depending on the context. Similarly, the phrase "in response to (a stated condition or event)" in some embodiments may be interpreted as "in response to detecting (a stated condition or event)" or "in response to detecting (a stated condition or event)", depending on the context.

It is to be understood that although the terms first, second, third, etc. may be used herein to describe various information, such information should not be limited to these terms. These terms are only used to distinguish one type of information from another. For example, a first may also be termed a second, and vice versa, without departing from the scope of the present disclosure. The word "if" as used herein may be interpreted as "at …" or "when …" or "in response to a determination", depending on the context.

The present application is further illustrated by way of the following examples, which are not intended to limit the scope of the utility model.

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the utility model, its application, or uses. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Fig. 3 shows a post-assembly schematic view of an emergency sign light fixture in some embodiments of the utility model, the light fixture not yet fully assembled: in a state where the back panel Bc23 is not attached to the front cover FC23, the connection and fixation structure between the respective components inside the lamp can be more easily embodied. At least partly for this purpose, some perspective, exploded views of the luminaire are shown in the drawings of some other embodiments of the utility model, or also with the back plate Bc23 removed.

Fig. 1a and fig. 2a are schematic exploded perspective views respectively illustrating emergency sign lamps according to two embodiments of the present invention; as can be seen from the drawings, the surface cover components in the sign lamp of the two embodiments are respectively: a) including only a face cover, b) including both a face cover and a light transmitting member TR23 'for filling the logo hole in the face cover'

FIG. 1B shows a cross-sectional view of the sign lamp of FIG. 1a taken along the direction B-B in FIG. 3.

Fig. 2B shows a cross-sectional view of the sign lamp of fig. 2a in the direction B-B in fig. 3.

Similarly, fig. 4 shows an assembled schematic view of an emergency sign light fixture in further embodiments of the utility model (with back panel Bc23 or single-sided cover removed); fig. 5a and 6a are exploded perspective views respectively illustrating emergency sign lamps according to two other embodiments of the present invention; as can be seen from the drawings, the surface cover components in the sign lamp of the two embodiments are respectively: a) including only the face cover, b) including both the face cover and the light transmissive member TR23 for filling the logo holes in the face cover.

Fig. 5b shows a cross-section of the emergency sign light shown in fig. 5a in the direction a-a in fig. 4.

Fig. 6b shows a first sectional view of the emergency sign light shown in fig. 6a in the direction a-a in fig. 4.

In addition, since there are many variations of the structure of the connection part Co23, fig. 6c to 6e show various cross-sectional views of the emergency sign lamp shown in fig. 6a taken along the direction a-a in various variations of the structure of the connection part. Of course, it should be understood that various modifications of the structure of the connection part Co23 may also be applied to the inner side (also called inner surface) of the cover in other emergency sign lamps such as fig. 5a, or may also be applied to the cover and/or the light-transmitting member in the lamps shown in fig. 1a and fig. 2 a. For example, assuming that the emergency sign lamp is a lamp with a double-sided display, which has a first cover assembly and a second cover assembly, and a light guide plate clamped between the first cover assembly and the second cover assembly, the first cover assembly can be connected to the through hole on the light guide plate body through a fixing column extending vertically from the inner side of the first cover assembly, so as to achieve a fixed connection between the first cover assembly and the light guide plate, and the second cover assembly can be clamped to the edge of the light guide plate through a pair of buckles distributed along the edge of the sign hole and extending vertically toward the light guide plate. Of course, preferably, in order to make the light emitting surface of the light guide plate and the inner surface of the light transmissive member closely contact with each other, a plurality of recesses may be formed in the inner surface of the first cover assembly, and the recesses may spatially correspond to the fixed ends of the fixing posts extending from the second cover assembly and penetrating through the light guide plate, so as to accommodate the fixed ends, so that the inner surface of the first cover assembly abuts against the first surface of the light guide plate without a space. Hereinafter, or not illustrated in detail and repetitiveness.

Fig. 7a and 7b show the connection structure and the connection process between the two corresponding connection portions shown in fig. 6 e.

Some embodiments of the present application are described in detail below with reference to fig. 4-7.

In one embodiment of the present invention, there is provided a fire emergency sign light, comprising:

the surface cover component is arranged on the upper surface of the shell,

a first connection part Co23 disposed on the inner surface of the face cover assembly;

a back plate Bc23 buckled with the surface cover component along the periphery,

the light guide plate Dao23 is sandwiched between the cover assembly and the back plate Bc23, and the light guide plate Dao23 is formed with a second connecting portion, which is fixedly joined to the first connecting portion Co 23.

Optionally, in some embodiments, a) the surface cover assembly further includes a surface cover FC23 provided with a mark hole H23, or, in other embodiments, B) the surface cover assembly includes not only a surface cover FC23 but also a light-transmitting member TR23 provided with a mark hole H23 on the surface cover FC23, the light-transmitting member TR23 has a shape of a mark pattern corresponding to the mark hole H23, as shown in fig. 6a, and the light-transmitting member TR23 is filled and fixed in the mark hole H23.

In the embodiment shown in fig. 4-7, the first connection part Co23 may be a protrusion (e.g., a fixing post or a male snap) on the face cover FC23 or the light-transmissive piece TR23, and the second connection part may be a recess on the light guide plate Dao23, which is adapted to support the formation of a fixed connection. As an alternative, the first connection portion Co23 may also be a recessed portion (e.g., a blind hole, a surface recess, etc.) on the surface cover FC23 or the light-transmitting member TR23, and the second connection portion may also be a protruding portion on the light guide plate Dao23, which are cooperatively connected with each other.

Alternatively, in some embodiments, the first connection part Co23 protrudes from the inner surface of the face cover FC23 or the inner surface of the light-transmitting piece TR 23. With the connection and fixation of the first connection part Co23 and the second connection part, a) the first surface of the light guide plate Dao23 and b) the inner surface of the face cover FC23 and/or the inner surface of the light-transmitting member TR23 are fixed to face each other.

The light-transmitting member TR23 may be filled in the index hole H23, or the light-transmitting member TR23 may not be filled to allow the light guide plate Dao23 to be directly exposed to the outside through the index hole H23. Alternatively, in some embodiments where the light-transmitting member TR23 is not filled in the flag hole H23, a flag pattern is formed on the first surface of the light guide plate Dao23 in a protruding manner; the first surface abuts against the inner surface of the face cover FC23 with the interconnection of the first connection Co23 and the second connection to let the logo pattern on the first surface enter the logo hole H23. Further optionally, light guide points are distributed on the mark patterns on the light guide plate, or light guide points are distributed on the exposed part of the light guide plate through the mark holes.

The light guide plate Dao23 in some embodiments of the present application has two opposite surfaces (or simply referred to as two surfaces), at least one of the two surfaces is integrally extended to form a mark pattern, and in the fire emergency sign lamp, the protrusion of the mark pattern protrudes into the mark hole H23 of the surface cover FC23, so that the light guide plate Dao23 and the fire emergency sign lamp which can display single-sided or double-sided display are formed. The logo pattern, which is a part integrally connected with the light guide plate Dao23, forms a protrusion on one or both (side) faces of the light guide plate Dao23, and the protrusion protrudes from the body of the light guide plate Dao23 in an integrally extending structure. The protrusion direction of the protrusion is different from the main extending direction of the main body of the light guide plate Dao23, for example, having an angle of about 90 °, so that the main body of the light guide plate Dao23 and the protrusion together define (define) a bent light guide path, and the bent light guide path is continuous and uninterrupted because the logo pattern as the protrusion is integrally formed by the main body of the light guide plate Dao 23. The light transmission performance is improved, for example, through the light guide path, the light in the main body portion of the light guide plate Dao23 can be smoothly transmitted to the logo pattern with low loss and be presented to the outside. Moreover, the integral extension structure of the logo patterns on the main body of the light guide plate Dao23 also simplifies the structure of the light guide plate Dao23 in the logo lamp, so that the light guide plate Dao23 with such a simple structure is conveniently manufactured by integral molding through injection molding of light-transmitting plastic such as polycarbonate, which improves the assembly property of the logo lamp and the manufacturability of the light guide plate Dao23 therein.

In other embodiments where the light-transmitting member TR23 is filled in the "sign hole H23", since the first surface of the light guide plate Dao23 is abutted against the inner surface of the light-transmitting member TR23, both also spatially define a bent light guide path, so that the light emitted from the light source body deeper inside the lamp can be guided into the sign hole H23 of the front cover FC23 through the light guide plate Dao23 and the light-transmitting member TR23 and emitted to the outside, so that the panel of the lamp can emit light to the outside through the sign hole H23 to present a sign pattern.

Alternatively, in some embodiments, the first connection part Co23 and the second connection part form a male-female fitting fixing structure therebetween. For example, the first connection part Co23 is a fixed post FE23 standing on the inner surface of the face cover FC23 and/or the inner surface of the light-transmitting piece TR 23; the second connection portion is a recess portion formed on the first surface of the light guide plate Dao23 and fitted with the fixing post FE 23.

Optionally, in some embodiments, the second connection portion is a through hole Vi23 opened on the plate body of the light guide plate Dao23, and the aperture of the through hole is adapted to the fixing post FE 23; the fixing column FE23 is inserted and fixed in the through hole Vi 23.

The top of the fixing post FE23 can adopt various structural designs to form a more secure relative fixation with the through hole Vi 23. For example: in the class a) embodiment, the top FE23F of the fixed pillar FE23 extends to a size larger than the aperture of the through hole Vi23, as shown in fig. 6 d. In the mounting process, the fixed FE23 top FE23F protrudes out of the light guide plate Dao23, the fixed end top FE23F is melted by heating to cover the whole through hole and be larger than the size of the through hole, and the light guide plate is fixed on the surface cover assembly.

In the class b) embodiment, the top FE23T of the fixed column FE23 is elastic and has a size larger than the aperture of the through hole Vi23, as shown in fig. 6e, in this embodiment, as the fixed column FE23 is inserted into the through hole Vi23, the top FE23T thereof elastically contracts to allow the fixed column FE23 to pass through the through hole Vi 23; and as the top FE23T of the fixed column FE23 is protruded out of the through hole Vi23, the top FE23T of the fixed column FE23 is expanded due to its elasticity, so that the fixed column FE23 cannot exit out of the through hole Vi23, thereby forming a connection fixation between the fixed column FE23 and the through hole Vi 23. Especially in the case that the through holes and the fixing posts cannot be tightly connected, as further shown in fig. 7a and 7b, a force is applied to the light guide plate Dao23 during the installation process, so that the through holes Vi23 on the light guide plate pass through the top portions FE23T ' by the elasticity of the top portions FE23T ' of the fixing posts FE23 ', and then the top portions FE23T ' are elastically expanded to clamp the fixing posts FE23 ' to the through holes Vi23, thereby forming the abutment between the first surface Sur18 of the light guide plate and the inner surface Sur3 of the light-transmitting member to establish a passage for light conduction.

In the embodiment of class c), the top of the fixing pillar FE23 is formed as an elastic clip (not shown), which passes through the through hole and is clipped in the through hole.

In another class d) embodiment, the backing plate Bc23 can be used to reinforce the abutting structure between the panel cover assembly and the light guide plate Dao23, especially in cases where the through holes and the fixing posts themselves cannot be tightly connected. The second surface Sur23 of the light guide plate Dao23, the fixing posts FE23 are inserted into the through holes Vi23 to form a certain fastening degree, and the local Bcpr23 of the back plate Bc23 can protrude toward the second surface Sur23 to press against the second surface, so that the tighter and firmer relative fixation between the face cover FC23 and the light guide plate Dao23 is realized by the insertion structure between the fixing posts FE23 and the through holes Vi23 and the pressing of the light guide plate Dao23 toward the face cover FC23 by the back plate Bc 23. The second surface Sur23 and the first surface Sur18 are located on two sides of the light guide plate body and are opposite to each other or are deviated from each other.

In addition to the embodiments a) to d), there are other various modifications, for example, in the case where the through-hole Vi23 and the fixed end FE23 are directly fixed by a close connection in the embodiment shown in fig. 6c, the light guide plate Dao23 can be directly fixed to the face cover FC23 by the fixed end FE23 and the through-hole Vi 23. The face cover FC23 has a light transmitting member TR23 in the symbol hole, and a fixed end FE23 is disposed on an inner surface Sur3 of the light transmitting member TR 23. The face cover FC23 is made of metal, the light-transmitting piece is made of light-transmitting plastic, and the edge E1 of the light-transmitting piece TR23 is clamped (or can be understood to be clamped and fixed) on the edge E2 of the mark hole H23 on the face cover FC 23.

For another example, in the embodiment shown in fig. 5a, in the case that the through hole Vi23 and the fixed end FE23 are directly fixed by a tight connection, the light guide plate Dao23 can be directly fixed on the cover FC23 by the fixed end FE23 and the through hole Vi 23.

The face cover is made of plastic, and the fixed end is arranged on the face cover. (1) The face cover assembly can be formed by double-shot molding, the face cover FC23 is light-tight plastic, the mark hole is filled with a light-transmitting piece made of light-transmitting plastic, and the face cover and the light-transmitting piece are integrally molded by injection molding. (2) The light holes in the middle of the face cover can also be physically transparent, and the light guide plate Dao23 is directly displayed.

Alternatively, in other embodiments shown in fig. 1-3, the first connection Co 23' is snap-fit to the second connection. For example, the first connection part Co23 ' is one or more pairs of oppositely arranged fasteners Co23 ' erected on the inner surface of the face cover FC23 ' and/or the inner surface Sur3 ' of the light-transmitting piece TR23 '; the second connecting portion is an edge of the light guide plate Dao23 'or may be a notch (not shown) on the edge of the light guide plate Dao 23' that fits with the buckle. Snap Co23 'snap fits with an edge of light guide plate Dao 23' or a notch thereon. The edge of the light guide plate Dao23 'or the notch on the edge is snap-fitted with the snap Co 23', so that the light guide plate Dao23 'and the face cover FC 23' are relatively fixed, and thus the first surface Sur18 of the light guide plate Dao23 'and the inner surface of the face cover FC 23' are fixedly arranged relatively. In this case, it is not necessary to form holes in the light guide plate Dao23 ', and the influence on the propagation of light in the light guide plate Dao 23' is reduced to some extent. Regardless of the snap connection or the connection mode of the fixing post and the through hole, the main parts of the sign lamp, such as the face cover FC23 'and the light guide plate Dao 23' can be assembled by simple pressing and other operations, and no glue is required to be applied, so that the connectability/associability between a plurality of surfaces (for example, the light emitting surface of the light guide plate Dao23 'and the inner surface of the face cover FC 23', the light emitting surface Sur18 'of the light guide plate Dao 23' and the inner surface Sur3 'of the light-transmitting piece TR 23') in the emergency sign lamp is improved, and the assemblability of the lamp is further improved.

In the embodiment shown in fig. 1a and 1b, the front cover FC23 ' is provided with a mark hole H23, and a light-transmitting piece TR23 ' may be disposed in the mark hole, and an edge of the light-transmitting piece TR23 ' is fastened to an edge of the mark hole H23. The snap Co23 'is arranged on the inner surface Sur3 of the light-transmitting member TR 23' to snap the edge of the light guide plate Dao23 ', so that the first surface Sur 18' of the light guide plate Dao23 'is closely attached to the inner surface Sur3 of the light-transmitting member TR 23' so that light can be transmitted out of the symbol hole via the light guide plate Dao23 'and the light-transmitting member TR 23'. In this solution, the face cover may be made of plastic or metal.

In the embodiment shown in fig. 2a and 2b, the cover FC23 'is made of plastic, and the snap Co 23' is arranged on the cover FC23 'at a position corresponding to the edge of the light guide plate Dao 23'. (1) The surface cover component can be formed by double-shot molding, the surface cover is made of opaque plastics, and the light-transmitting piece is made of light-transmitting plastics. (2) The mark hole H23 may be physically hollowed out, in which the light transmitting member TR 23' is not filled, and the light guide plate is directly exposed to the outside through the mark hole.

Alternatively, in some embodiments, the first connection part Co23 is one or more pairs of snap-fit Co23 'extending toward the light guide plate Dao23 substantially perpendicular to the inner surface of the face cover FC23 and/or the inner surface Sur3 of the light transmissive piece TR23 and snap-fit into the edge of the light guide plate Dao23 or a notch on the edge, where the edge of the light guide plate Dao23 or a notch thereon that fits the snap-fit Co 23' serves as a second connection part on the light guide plate and snap-fits with the first connection part Co 23. Here, "substantially perpendicular" means that the angle between the protruding (male) snap or fixing post FE23 and the panel body of the face cover FC 23/the light transmissive member TR 23/the light guide plate Dao23 is in the range of [80 °,90 ° ], or [75 °,90 ° ], or [85 °,90 ° ], or [70 °,90 ° ]. Of course, alternatively, the cross section of the fixed column FE23 may be circular, oval, square, etc., and the fixed column FE23 is not limited to a cylinder as a whole, but may also be in the shape of a cone, a truncated pyramid, etc., and the through hole Vi23 has a shape corresponding to the dimension of the fixed column FE 23.

In the scheme of clamping fit between the first connecting part and the second connecting part, A) a plurality of pairs of clamping buttons Co23 ' are oppositely arranged on the inner surface of the face cover FC23 along the edge of the mark hole H23, or B) a plurality of pairs of clamping buttons Co23 ' are oppositely arranged on the inner surface Sur3 of the light transmitting piece TR23 along the edge of the light transmitting piece TR23, or C) a plurality of pairs of clamping buttons Co23 ' are oppositely arranged on the inner surface of the face cover FC23 and/or the inner surface Sur3 of the light transmitting piece TR23 along the edge of the light guide plate Dao 23. In this way, the joint between the snap Co 23' and the light guide plate Dao23 is more uniformly and tightly surrounded/distributed around the periphery of the light guide plate Dao23, as shown in fig. 1a and 2a, whereby a more secure fixing connection structure between the light guide plate Dao23 and the face cover FC23 can be realized.

Optionally, in some embodiments, the emergency sign lamp further includes a circuit board Li23 and light source bodies (not labeled in the figures) distributed on the circuit board Li23, and the light guide plate Dao23 extends to the periphery of the sign hole H23 and is optically connected with the light source bodies; the light source body is a plurality of LED lamp beads distributed on the circuit board, and a plurality of inward concave light inlets LHo1-2 are distributed at the periphery of the light guide plate Dao23 and respectively contain the LED lamp beads; the light inlet LHo1-2 is not penetrating through the light guide plate Dao23, or the light inlet LHo1-2 may also penetrate through the light guide plate Dao23, as shown in fig. 8, which is a partial schematic view of a light guide plate in an embodiment in which light inlets with different shapes are distributed on the bottom.

Further, alternatively, the flag hole H23 is an optical through hole Vi23, which means that the flag hole H23 optically penetrates the face cover FC23, and is not limited to a physical penetrating structure. The optical opening may be formed in the corresponding position of the cover, for example, by using some transparent material, but in this case, the mark hole H23 of the cover FC23 is not physically penetrated, but only the transparent and light-transmitting property is maintained. In popular terms: the indicia openings H23 remain light transmissive but not necessarily "breathable". Accordingly, the optical surface of the light guide plate Dao23 is "externally exposed", also referred to as "optical exposure", through the flag hole H23 on the first cover FC23, without being limited to being physically transparently exposed. For example, a light transmitting paper or a light transmitting member TR23 may be further disposed in the mark hole H23, and the light guide plates Dao23 and Dao 23' are optically exposed to the outside through the light transmitting paper or the light transmitting member TR 23.

In addition, the outer side/surface of the face cover FC23 may be understood as the side exposed to the outside as the entire lamp outer surface when the face cover FC23 is assembled to the emergency marker lamp; conversely, when the face cover FC23 is fitted to the emergency marker light, the side facing the interior of the entire light fixture may be understood to be the inside/inner surface. The inner and outer surfaces of other parts such as the light-transmitting member TR23 can be similarly understood, and are not described in detail.

The connection portion may also be implemented as: other attachment mechanisms such as bayonet connections, bolted connections, threaded connections, friction fittings, and the like. It should be noted that the light emitting panel in some embodiments refers to a plate body that can emit light through its surface. The light emitted through the surface of the light emitting plate can a) be caused by self-luminous performance of the light emitting plate, for example, the light emitting plate can be made of self-luminous materials, and LED beads are distributed and embedded in the plate body; or b) the luminescent plate acts as a light guiding medium to conduct the luminescence of the other light sources to the light emitting surface thereof. For the case b) above, the light emitting panel may be embodied and named light guide plate Dao 23.

Alternatively, the light emitting panel or the light guide panel Dao23 is made of one of a subgeneric material, polycarbonate plastic, or polystyrene-based plastic.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

The relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail, but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.

Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular is intended to include the plural unless the context clearly dictates otherwise, and it should be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of features, steps, operations, devices, components, and/or combinations thereof.

It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are capable of operation in sequences other than those illustrated or described herein.

The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

The embodiments in the present specification are described in a progressive manner, and the same and similar parts among the embodiments are referred to each other, so that various optional technical features can be combined with other embodiments in any reasonable manner, and the contents among the embodiments and under various headings can be combined in any reasonable manner. Each embodiment is described with emphasis on differences from the other embodiments. In particular, for the system embodiment, since it is substantially similar to the method embodiment, the description is simple, and for the relevant points, reference may be made to the partial description of the method embodiment.

The terminology used in the embodiments of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used in the examples of this application and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise, and "a plurality" typically includes at least two. It should be understood that the term "and/or" as used herein is merely one type of association that describes an associated object, meaning that three relationships may exist, e.g., a and/or B may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.

While specific embodiments of the present application have been described above, it will be understood by those skilled in the art that this is by way of illustration only, and that the scope of the present application is defined by the appended claims. Various changes and modifications to these embodiments may be made by those skilled in the art without departing from the spirit and principles of this application, and these changes and modifications are intended to be included within the scope of this application.

Claims (11)

1. A fire emergency sign light fixture, comprising:

the surface cover component is arranged on the upper surface of the shell,

the first connecting part is arranged on the inner surface of the face cover component;

a back plate buckled with the face cover component along the periphery,

and the light guide plate is clamped between the surface cover assembly and the back plate, and a second connecting part is formed on the light guide plate and is jointed with the first connecting part.

2. A fire emergency signage light fixture as defined in claim 1, wherein A) the face cap assembly further comprises a face cap,

a mark hole is arranged on the bottom of the bottle body, or,

B) the face cover assembly further comprises a face cover and a light-transmitting piece, wherein the face cover is provided with a mark hole, the light-transmitting piece and the mark hole correspondingly have the shape of a mark pattern, and the light-transmitting piece is filled and fixed in the mark hole.

3. A fire emergency marker light fitting according to claim 2,

the first connecting part is protruded from the inner surface of the surface cover or the inner surface of the light-transmitting piece;

with the mutual connection of the first connecting part and the second connecting part, a) the first surface of the light guide plate and b) the inner surface of the face cover and/or the inner surface of the light-transmitting member are fixed in opposite directions.

4. A fire emergency signage light as in claim 3, wherein the first surface of the light guide plate is embossed with a signage pattern;

the first surface approaches to the inner surface of the face cover along with the mutual connection of the first connecting part and the second connecting part,

so that the marking pattern on the first surface extends into the marking hole; alternatively, the first and second electrodes may be,

the first surface abuts against the inner surface of the face cover along with the mutual connection of the first connecting part and the second connecting part, so that the mark pattern on the first surface extends into the mark hole.

5. A fire emergency marker light fitting according to any one of claims 2 to 4, wherein the first connection portion is a male-female or snap-fit with the second connection portion;

the first connecting part is a fixing column and is erected on the inner surface of the face cover and/or the inner surface of the light-transmitting piece; the second connecting portion is a recessed portion formed on the first surface of the light guide plate and matched with the fixing column.

6. A fire emergency sign lamp as claimed in claim 5, wherein the recess is a through hole formed in the light guide plate body, and the diameter of the through hole is matched with that of the fixing column;

the fixing column is fixedly inserted into the through hole.

7. A fire emergency marker light fitting according to claim 6,

a) the top of the fixed column extends to a hole diameter larger than the through hole in size; or

b) The top of the fixing column is elastic and the size of the fixing column is larger than the aperture of the through hole; or

c) The top of the fixing column is formed into an elastic buckle; or

d) The light guide plate also has a second surface facing away from the first surface, and the back plate is locally protruded toward the second surface to be pressed against the second surface.

8. A fire emergency marker light fitting according to any one of claims 2 to 4, wherein the first connection portion is snap-fitted with the second connection portion;

the first connecting parts are one or more pairs of buckles which are arranged oppositely and are erected on the inner surface of the face cover and/or the inner surface of the light-transmitting piece; the second connecting part is the edge of the light guide plate or a notch matched with the buckle on the light guide plate;

the buckle is in buckle fit with the edge of the light guide plate or a notch on the light guide plate.

9. A fire emergency marker light fixture as claimed in any one of claims 2 to 4, wherein the first connection portion is one or more pairs of snaps extending substantially perpendicular to the inner surface of the face cover and/or the inner surface of the light transmissive member towards the light guide plate,

and is clamped at the edge of the light guide plate or the notch on the light guide plate;

wherein, A) the multiple pairs of buckles are arranged on the inner surface of the surface cover along the edge of the mark hole in opposite directions, or, B) the multiple pairs of buckles are arranged on the inner surface of the light-transmitting piece along the edge of the light-transmitting piece in opposite directions, or, C) the multiple pairs of buckles are arranged on the inner surface of the surface cover and/or the light-transmitting piece along the edge of the light guide plate in opposite directions.

10. A fire emergency sign light fixture as recited in claim 8 further comprising a light source body and a circuit board, said light guide plate extending to said sign hole perimeter and being optically connected to said light source body;

the light source body is a plurality of LED lamp beads distributed on the circuit board;

a plurality of inwards concave light inlets are distributed on the periphery of the light guide plate and are used for accommodating the plurality of LED lamp beads respectively; the light inlet is not communicated with the light guide plate body;

light guide points are distributed on the exposed part of the light guide plate through the mark hole;

A) the surface cover is made of light-tight plastic, the light-permeable piece is made of light-permeable plastic, and the surface cover and the light-permeable piece are integrally formed by injection molding; or B) the surface cover is made of metal, the light-transmitting piece is made of light-transmitting plastic, and the edge of the light-transmitting piece is clamped and fixed at the edge of the mark hole on the surface cover.

11. A fire emergency sign light fixture as recited in claim 8 further comprising a light source body and a circuit board, said light guide plate extending to said sign hole perimeter and being optically connected to said light source body;

the light source body is a plurality of LED lamp beads distributed on the circuit board;

a plurality of inwards concave light inlets are distributed on the periphery of the light guide plate and are used for accommodating the plurality of LED lamp beads respectively; the light inlet penetrates through the light guide plate body;

light guide points are distributed on the exposed part of the light guide plate through the mark hole;

A) the surface cover is made of light-tight plastic, the light-permeable piece is made of light-permeable plastic, and the surface cover and the light-permeable piece are integrally formed by injection molding; or B) the surface cover is made of metal, the light-transmitting piece is made of light-transmitting plastic, and the edge of the light-transmitting piece is clamped and fixed at the edge of the mark hole on the surface cover.

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